package ltd.smallwang.infrastructure.user.db;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import ltd.smallwang.infrastructure.user.db.model.UserPO;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserMapper extends BaseMapper<UserPO> {

  int countByUsername(String username);
}
